Increasing The Maximum Allowed Frame Rate - Basler GIGE VISION ace acA640-100gm/gc Manual

Area scan cameras

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6.12.2 Increasing the Maximum Allowed Frame Rate

You may find that you would like to acquire frames at a rate higher than the maximum allowed with

the camera's current settings. In this case, you must adjust one or more of the factors that can

influence the maximum allowed rate and then check to see if the maximum allowed rate has

increased:

Decreasing the height of the AOI can have a significant impact on the maximum allowed frame

rate. If possible in your application, decrease the height of the AOI.

If you are using normal exposure times and you are using the camera at it's maximum

resolution, your exposure time will not normally restrict the frame rate. However, if you are

using long exposure times or small areas of interest, it is possible that your exposure time is

limiting the maximum allowed frame rate. If you are using a long exposure time or a small AOI,

try using a shorter exposure time and see if the maximum allowed frame rate increases. (You

may need to compensate for a lower exposure time by using a brighter light source or

increasing the opening of your lens aperture.)

The frame transmission time will not normally restrict the frame rate. But if you are using

multiple cameras and you have set a small packet size or a large inter-packet delay, you may

find that the transmission time is restricting the maximum allowed rate. In this case, you could

increase the packet size or decrease the inter-packet delay. If you are using several cameras

connected to the host PC via a network switch, you could also use a multiport network adapter

in the PC instead of a switch. This would allow you to increase the Ethernet bandwidth

assigned to the camera and thus decrease the transmission time.

If you are using an acA750-30 camera:

You can use the Field 0 or the Field 1 field output mode instead of the Concatinated New

Fields or the Deinterlaced New Fields field output mode. With the Field 0 or the Field 1 modes,

you can get approximately twice the frame rate, but you will be getting half height frames.

For more information about AOI settings, see Section 10.5 on

For more information about the packet size and inter-packet delay settings and about the settings

that determine the bandwidth assigned to the camera, see Section B.2 on

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